This system used Fluke 5520A as a multi-functional signal generator which can output standard resistance to calibrate DC bridges. GPIB bus technology was applied between computer and Fluke 5520A.

• 该系统采用Fluke公司的多功能信号发生器Fluke 5520A输出高精度的标准电阻来进行电桥检定,计算机与Fluke 5520A信号发生器之间的通信采用GPIB总线技术。